Crown ether derivatives
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Abstract
The invention describes crown ether chelators, including crown ethers having the formula
and aza-substituted and thia-substituted analogs thereof. These crown ethers may be substituted by a dye moiety, a chemically reactive group, a conjugated substance, or a combination thereof. Chelators that are substituted by fluorescent dyes are particularly useful as indicators for metal cations, particularly Na+ and K+ ions, and particularly where binding of the target ion results in a change in the fluorescence properties of the indicator that can be correlated with the ion concentration. Methods are provided for utilizing reactive groups on the chelators for conjugation to dyes, lipids and polymers and methods for enhancing entry of the indicators into living cells.
51 Citations
33 Claims
- 1. A crown ether chelating compound having formula:
- 19. A compound having formula:
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24. A composition comprising:
a) a compound having the formula - View Dependent Claims (25)
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26. A method for binding a target metal ion in a sample, comprising steps of:
a) contacting said sample with a metal chelating compound having the formula - View Dependent Claims (27, 28, 29, 30)
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31. A method for binding and detecting target ions in a live cell, said method comprises:
a) contacting a sample of live cells with a crown ether compound with the proviso that said compound comprise a DYE moiety and at least one lipohilic group, wherein the crown ether compounds has the formula - View Dependent Claims (32, 33)
Specification